You should mention the invariant (okay, it's not an invariant, but it's a useful principle) that lists contain things that are all the same type, while tuples often consist of objects of different types.
Except that never made much sense to me. If you need a container that you can mutate you will use a list: whether the elements are homogeneous or heterogeneous.
It seems a theoretical distinction with little practical application.
I've added a note about this though - thanks.
What's the source of that data_stuff.jpg image at the top of the tutorial? And where can I find a higher-resolution version of the image?
Because it looks a lot like an idea I had about a year ago (but never did anything with) for presenting different data types and operations on them -- kind of a flow-chart programming sort of thing. Now I'm wondering if someone else had the same idea and actually implemented it; so I'd really like to know where that image came from.
The image was just trawled from google images I'm afraid. I can't even remember the search terms. :-(
Commenting by HaloScan
